The richest man in the world: starting from receiving 70 billion red envelopes

Chapter 28 Teacher Tiantian, Lin Fan is on stage!
【Name: Lin Fan】

[Level: LV4]

【LV4奖励：每1次呼吸，获得10元；每睡1秒钟，获得10元；每走1步，获得10元。每天24点奖励到账。】

[Upgrade consumption amount: 297 million/1000 million (gifting to others, gambling, etc. are not counted. In addition, all items obtained from the system are prohibited from trading)]

[Skills: Professional car driving skills, charm aura (5% chance of triggering love at first sight, unforgettable), violent aesthetics, drinking gentleman, absolute concentration (5% chance of triggering a flash of inspiration), professor-level mathematics experience, eye of truth, professional level Basketball skills, pianist performance skills. 】

【Fund: 1150】

Lin Fan glanced at the system list, closed his eyes, and fell into a deep sleep.

……

The next day, a ray of warm sunrise lightly sprinkled into the 104 dormitory through the window.

"Jingle Bell!"

Almost at the same time, three different bells rang in the bedroom.

Then, Ma Zhong, Song Yi and Zheng Jinbao, who were sleeping soundly, sat up from the bed together and quickly dressed.

Lin Fan couldn't help but wonder: "What's wrong with you?"

Yesterday, they struggled for a long time before they reluctantly got up.

Today, it's like two different people.

"Teacher Tiantian's class is Teacher Tiantian's class!" Zheng Jinbao shouted.

Lin Fan was still puzzled, but he continued to dress and wash.

On the way to the classroom, Lin Fan looked at the anxious steps of the three and asked, "Is this teacher Tian Tian's class important?"

"It's important! It's so important! If I don't see Teacher Tiantian for a day, I feel uncomfortable all over!" Zheng Jinbao said.

Song Yidao: "Brother Fan, hurry up! Otherwise, there will be no seats later."

No seat?
University classrooms are very spacious.

During Lin Fan's two days of class, there were always many empty seats in the classroom.

Will there be no seats today?
Lin Fan finally came to the classroom full of doubts.

It was only at this time that he understood why Song Yi and others said that.

There are still ten minutes before class starts.

However, the classroom was already filled with darkness, full of people.

Zheng Jinbao pointed to the seat in the last row and said excitedly: "There are still four seats there, come on, let's go there quickly, don't be taken by someone."

When Lin Fan and the others sat down, all the seats were already filled.

Those who entered the classroom again had no choice but to leave with a sigh after seeing the seating situation.

Lin Fan asked, "Why are there so many people in this teacher's class?"

"You'll know later." Song Yi said excitedly.

"Jingle Bell!"

At this moment, the class bell rang.

In an instant, the originally chaotic classroom became as quiet as a needle.

"Tap Tap!"

There was a sound of crisp footsteps, from far to near.

Soon, a superb beauty came to the podium.

She has a bunch of waterfall-like hair, a pretty face that can be broken by blows and blows, with willow leaf eyebrows, Danfeng eyes, a small Qiong nose, and a smart cherry mouth carefully carved by God.

A white dress that framed her perfect figure (oYo).

In addition, she exudes a special charm... As long as people take a look at it, they can't move their heads at all.

Lin Fan couldn't help observing with the eyes of reality.

Face value: 98
Favorability: 60
98 looks!
Almost full marks!

Sinking fish and falling geese, closing the moon to shame the flowers.Maybe it was her.

It's no wonder that the students in the class are so anxious to come to her class.

Favorability, 60?Reached the passing line of 60 points!She seems to have a good impression of herself?
Could it be that this is a teacher who treats every student as a friend?

At this time, Hu Tian, ​​who was standing on the podium, said: "Today, we will continue to explain advanced algebra..."

Her voice is the same as her name, very sweet and full of magnetism, people don't want to miss even a word.

After a while, Hu Tian wrote a topic on the blackboard: find all prime numbers p, q, r, so that p^q+p^r is a perfect square number.

"You can try to answer it," Hu Tian said.

All the students immediately picked up their pens and started writing on the draft paper.

They thought of solving difficult problems in the shortest time, so as to get Hu Tian's attention.

However, soon, all the students scratched their heads.

Because they simply don't know how to answer.

Zheng Jinbao said anxiously: "Ma Zhong, haven't you solved it yet? It's been so long!"

Ma Zhong said: "Don't worry!"

"Don't be preempted by others! If Ma Zhong can't answer, then I hope everyone can't answer!" Song Yi prayed silently.

Hu Tian scanned the classroom with bright eyes like water, as if looking for someone who could answer the question.

Unfortunately, no one raised their hand to answer the question.

So, Hu Tian said: "Lin Fan, can you come up and explain it?"

Lin Fan stood up slowly.

Immediately, the eyes of all the students fell on Lin Fan.

That's envy, it's jealousy!

Lin Fan didn't understand why this Hu Tian suddenly called her name.

It seems that I didn't raise my hand?
Lin Fan first looked at the topics on the blackboard, thought for a while, then walked to the podium, and picked up the chalk to write quickly.

If q=r, then p^q+p^r=2p^q, so, p=2, q is a prime number.

So (2, q, q) is a ternary prime array satisfying the condition...

……

In summary:

(2, 2, 5), (2, 5, 2);
(3, 2, 3), (3, 3, 2);
(2,q,q), (q>=3)

Soon, a lot of calculations were written on the blackboard, and the answer was finally obtained.

Hu sweet nodded and said: "The answer is very correct, and it is simpler than the calculation method I thought."

Lin Fan said: "However, this is still not the easiest way to solve the problem."

"Oh?" Hu Tian immediately became interested.

Then, under Hu Tian's expectant eyes, Lin Fan wrote down the nearly half-simplified steps to solve the problem.

After Hu Tian saw it, her beautiful eyes lit up slightly, and she exclaimed: "I can't imagine that prime numbers can be calculated like this..."

After pondering for a while, Hu Tian said again: "If you use this method, maybe..."

Hu Tian couldn't help but write quickly on the blackboard.

Q=p1m1+b1=p2m2+b2……pkmk+bk
Q=41=2m+1=3m+2=5m+1
……

Not long after, Hu Tian stopped the chalk in her hand.

Then, looking for help, he looked at Lin Fan.

Lin Fan said, "The twin prime conjecture?"

Since gaining professor-level mathematics experience, he has read a lot of mathematics-related materials, and of course he knows the world-class problem-the twin prime number conjecture.

Hu Tiandian nodded and said, "Yes."

Lin Fan picked up the chalk and put it under Hu Tian, ​​and started writing quickly.

However, even if Lin Fan has professor-level mathematics experience and absolute concentration, if he fails to trigger the 5% flash of inspiration, he will not be able to solve the twin prime number conjecture at all.

After a while, Lin Fan also stopped.

Hu Tian said: "If the above calculation is replaced by p^q+xb=3m+2... what do you think?"

Lin Fan thought for a while, then shook his head and said, "No, it's 5p5m+p^q instead..."

While discussing, the two wrote down the steps to solve the problem.

Soon, the entire blackboard was filled with dense calculation formulas.

(End of this chapter)